CN107976608A - A kind of fault location system for distribution lines and method - Google Patents
A kind of fault location system for distribution lines and method Download PDFInfo
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Abstract
本申请是关于一种配电线路故障定位系统和方法,系统包括采集装置、启动元件、数据处理装置和输出装置,采集装置包括穿心式行波传感器和无线传感器,穿心式行波传感器通过同轴电缆与无线传感器连接,无线传感器将信号分别传递至启动元件和数据处理装置,数据处理装置对信号进行处理后传递给输出装置,当信号经启动元件判定为故障信号时,启动元件经数据处理装置将信号传递至输出装置。本申请实施例中的系统和方法结构简单,方便操作者进行安装,而且采用行波法与无线传输相结合,有利于提高故障定位精度。
This application is about a distribution line fault location system and method. The system includes an acquisition device, a starting element, a data processing device and an output device. The acquisition device includes a through-hole traveling wave sensor and a wireless sensor. The coaxial cable is connected to the wireless sensor, and the wireless sensor transmits the signal to the starting element and the data processing device respectively, and the data processing device processes the signal and transmits it to the output device. The processing means transmits the signal to the output means. The system and method in the embodiment of the present application have a simple structure and are convenient for operators to install, and the combination of traveling wave method and wireless transmission is beneficial to improve the accuracy of fault location.
Description
技术领域technical field
本申请涉及配电网设备技术领域,尤其涉及一种配电线路故障定位系统和方法。The present application relates to the technical field of distribution network equipment, in particular to a distribution line fault location system and method.
背景技术Background technique
配电网是由架空线路、电缆、杆塔、配电变压器、隔离开关、无功补偿器以及一些附属设施组成、在电力网中起着分配电能作用的重要网络。配电网一旦发生故障,会对配电系统造成很大损失,因此,当配电线路发生故障时,及时对配电线路故障进行定位从而使故障得到及时解决,是个重要问题。The distribution network is composed of overhead lines, cables, towers, distribution transformers, isolating switches, reactive power compensators and some ancillary facilities, and plays an important role in distributing electric energy in the power network. Once the distribution network fails, it will cause great losses to the distribution system. Therefore, when the distribution line fails, it is an important issue to locate the distribution line fault in time so that the fault can be solved in time.
目前,在配电网中对配电线路故障进行定位通常采用配电线路故障定位装置,具体地,这种装置采用阻抗法进行故障检测,当配电网出现故障时,由采集单元进行录波并将信号通过光缆或通讯线传输至主机系统,主机系统测量电压与电流,从而得到故障点到测量端的阻抗,再利用线路参数建立故障模型,通过计算获取到故障距离,实现对配电线路故障进行定位。At present, the distribution line fault location device is usually used in the distribution network to locate the distribution line fault. Specifically, this device uses the impedance method for fault detection. When the distribution network fails, the acquisition unit performs wave recording. And transmit the signal to the host system through the optical cable or communication line, the host system measures the voltage and current, so as to obtain the impedance from the fault point to the measurement end, and then use the line parameters to establish a fault model, and obtain the fault distance through calculation, so as to realize the detection of distribution line faults to locate.
然而,目前的配电线路故障定位装置中,由于采用阻抗法进行故障检测,阻抗法无法消除接地故障点存在的过渡电阻等参数的影响,导致采用该方法进行故障定位的定位精度低,准确性不够,且阻抗法结构复杂,不便于应用且不适合长距离输电配电网中故障定位。另外,目前的配电线路故障定位装置中通过阻抗法确定故障位置后,将故障处电流信号或电压信号通过光缆或者通讯线等有线电缆进行传输,这种采用铺电线的方式进行信号传输,使得信号容易受到外界因素影响,传输效率低下。However, in the current distribution line fault location device, because the impedance method is used for fault detection, the impedance method cannot eliminate the influence of parameters such as transition resistance at the ground fault point, resulting in low positioning accuracy and accuracy of fault location using this method. Insufficient, and the structure of the impedance method is complex, not easy to apply and not suitable for fault location in long-distance transmission and distribution networks. In addition, in the current distribution line fault location device, after the fault location is determined by the impedance method, the current signal or voltage signal at the fault is transmitted through a cable such as an optical cable or a communication line. This method of laying wires for signal transmission makes the The signal is easily affected by external factors, and the transmission efficiency is low.
发明内容Contents of the invention
为克服相关技术中存在的故障定位准确性低、信号传输效率低的问题,本申请提供一种配电线路故障定位系统和方法。In order to overcome the problems of low fault location accuracy and low signal transmission efficiency existing in related technologies, the present application provides a distribution line fault location system and method.
一种配电线路故障定位系统,包括采集装置、启动元件、数据处理装置和输出装置,所述采集装置包括穿心式行波传感器和无线传感器,所述穿心式行波传感器套接在配电线上用于采集配电线上的信号,所述无线传感器设置于所述采集装置的内部,所述穿心式行波传感器通过同轴电缆与所述无线传感器连接,所述采集装置通过所述无线传感器将信号分别传递至启动元件和数据处理装置,所述数据处理装置对信号进行处理后传递给所述输出装置,当信号经启动元件判定为故障信号时,所述启动元件将信号经数据处理装置传递至输出装置。A distribution line fault location system, including a collection device, a starting element, a data processing device and an output device, the collection device includes a through-hole traveling wave sensor and a wireless sensor, and the through-hole traveling wave sensor is socketed in the distribution line The wire is used to collect the signal on the distribution line, the wireless sensor is arranged inside the collection device, the through-hole traveling wave sensor is connected to the wireless sensor through a coaxial cable, and the collection device passes The wireless sensor transmits the signal to the activation element and the data processing device respectively, and the data processing device processes the signal and transmits it to the output device. When the signal is determined to be a fault signal by the activation element, the activation element transmits the signal to It is transmitted to the output device through the data processing device.
可选地,所述数据处理装置包括高速数据处理元件和中央处理器,所述采集装置通过所述无线传感器将信号分别传递至所述启动元件和高速数据处理元件,所述高速数据处理单元对数据进行初步处理后发送至所述中央处理器,所述中央处理器与所述输出装置连接,所述无线传感器还通过所述启动元件与所述中央处理器连接。Optionally, the data processing device includes a high-speed data processing element and a central processing unit, and the acquisition device transmits signals to the starting element and the high-speed data processing element respectively through the wireless sensor, and the high-speed data processing unit The data is sent to the central processing unit after preliminary processing, and the central processing unit is connected to the output device, and the wireless sensor is also connected to the central processing unit through the activation element.
可选地,所述高速数据处理元件包括:A/D转换器、FPGA逻辑电路控制单元、存储器、单片机以及光耦隔离器,所述A/D转换器对信号进行A/D转换并将A/D转换后的信号传递至存储器和单片机,所述存储器对A/D转换后的信号进行存储并与FPGA逻辑电路控制单元进行交互,所述单片机对A/D转换后的信号进行初步处理并与FPGA逻辑电路控制单元进行交互,所述FPGA逻辑电路控制单元将信号反馈至A/D转换器,所述单片机还通过所述光耦隔离器与所述中央处理器连接。Optionally, the high-speed data processing element includes: an A/D converter, an FPGA logic circuit control unit, a memory, a single-chip microcomputer, and an optocoupler isolator, and the A/D converter performs A/D conversion on the signal and converts the A/D The signal after the /D conversion is delivered to the memory and the single-chip microcomputer, the memory stores the signal after the A/D conversion and interacts with the FPGA logic circuit control unit, and the single-chip microcomputer performs preliminary processing on the signal after the A/D conversion and Interacting with the FPGA logic circuit control unit, the FPGA logic circuit control unit feeds back signals to the A/D converter, and the single-chip microcomputer is also connected to the central processing unit through the optocoupler isolator.
可选地,所述中央处理器为DSP系列TMS320C5545芯片。Optionally, the central processing unit is a DSP series TMS320C5545 chip.
可选地,所述中央处理器还与一大容量存储器连接。Optionally, the central processing unit is also connected to a large-capacity memory.
可选地,所述无线传感器与同轴电缆之间设置有电压抑制及分压器,所述同轴电缆还与一避雷器连接。Optionally, a voltage suppressor and a voltage divider are arranged between the wireless sensor and the coaxial cable, and the coaxial cable is also connected to a lightning arrester.
可选地,所述无线传感器采用GPRS信号进行传输,且所述无线传感器支持MODBUS协议。Optionally, the wireless sensor adopts GPRS signal for transmission, and the wireless sensor supports MODBUS protocol.
一种配电线路故障定位方法,其特征是,所述方法包括:A fault location method for distribution lines, characterized in that the method comprises:
根据配电线路中电流突变情况判断配电线路是否发生故障;Judging whether the distribution line is faulty according to the sudden change of current in the distribution line;
当配电线路发生故障时,通过行波法获取配电线路中的故障录波信号;When the distribution line fails, the fault recording signal in the distribution line is obtained by the traveling wave method;
将所述故障录波信号通过无线传输的方式传输至数据处理装置;Transmitting the fault recording signal to a data processing device by means of wireless transmission;
数据处理装置对所述故障录波信号进行分析处理,获取故障分析信号并对故障分析信号进行存储;The data processing device analyzes and processes the fault recording signal, obtains the fault analysis signal and stores the fault analysis signal;
根据客户端的请求,将所述故障分析信号发送至客户端。According to the request of the client, the fault analysis signal is sent to the client.
可选地,所述数据处理装置包括高速数据处理元件和中央处理器。Optionally, the data processing device includes a high-speed data processing element and a central processing unit.
可选地,所述数据处理装置对所述故障录波信号进行分析处理后,获取故障分析信号并进行存储,包括:Optionally, the data processing device acquires and stores the fault analysis signal after analyzing and processing the fault recording signal, including:
所述高速数据处理元件对所述故障录波信号进行初步处理和存储,并将处理后的数据发送至中央处理器;The high-speed data processing element performs preliminary processing and storage on the fault recording signal, and sends the processed data to the central processing unit;
所述中央处理器对高速数据处理单元初步处理后的数据进行分析,获取故障分析信号并对故障分析信号进行存储。The central processing unit analyzes the data preliminarily processed by the high-speed data processing unit, acquires and stores fault analysis signals.
本申请的实施例提供的技术方案可以包括以下有益效果:The technical solutions provided by the embodiments of the present application may include the following beneficial effects:
本申请提供一种配电线路故障定位系统,包括采集装置、启动元件、数据处理装置和输出装置,采集装置包括穿心式行波传感器和无线传感器,穿心式行波传感器套接在配电线上用于采集配电线上的信号,无线传感器设置于采集装置的内部,穿心式行波传感器通过同轴电缆与无线传感器连接,采集装置通过无线传感器将信号分别传递至启动元件和数据处理装置,数据处理装置对信号进行处理后传递给输出装置,当信号经启动元件判定为故障信号时,启动元件将信号经数据处理装置传递至输出装置,通过输出装置将故障信息反馈至操作人员。本申请实施例中当配电线路中没有故障时,启动元件不被触发,当配电线路中发生故障时启动元件被触发。通过设置启动元件来判断配电线路中是否发生故障,并通过数据处理装置及时对配电线路中的故障进行处理。本申请实施例的采集装置中设置有穿心式行波传感器和无线传感器,通过穿心式行波传感器对故障信号进行采集并通过无线传感器将信号传递至数据处理装置,行波法进行故障定位准确性高,且装置简单,易于推广,且该装置还适用于长距离输电配电网中故障定位。无线传感器的采用能够避免有线信号传输,有利于保持信号的精度和提高信号传输的效率。The application provides a power distribution line fault location system, which includes a collection device, a starting element, a data processing device and an output device. The collection device includes a through-hole traveling wave sensor and a wireless sensor. The line is used to collect the signal on the distribution line. The wireless sensor is installed inside the collection device. The through-hole traveling wave sensor is connected to the wireless sensor through a coaxial cable. The collection device transmits the signal to the starting element and the data through the wireless sensor Processing device, the data processing device processes the signal and transmits it to the output device. When the signal is determined to be a fault signal by the starting element, the starting element transmits the signal to the output device through the data processing device, and the fault information is fed back to the operator through the output device . In the embodiment of the present application, when there is no fault in the power distribution line, the starting element is not triggered, and when a fault occurs in the power distribution line, the starting element is triggered. It is judged whether there is a fault in the power distribution line by setting the starting element, and the fault in the power distribution line is processed in time through the data processing device. The acquisition device of the embodiment of the present application is provided with a through-type traveling wave sensor and a wireless sensor, and the fault signal is collected by the through-type traveling wave sensor and transmitted to the data processing device through the wireless sensor, and the traveling wave method is used for fault location The accuracy is high, and the device is simple and easy to popularize, and the device is also suitable for fault location in long-distance power transmission and distribution networks. The use of wireless sensors can avoid wired signal transmission, which is conducive to maintaining the accuracy of signals and improving the efficiency of signal transmission.
本申请还提供一种配电线路故障定位方法,包括:根据配电线路中电流突变情况判断配电线路是否发生故障;通过行波法获取配电线路中的故障录波信号;将故障录波信号通过无线传输的方式传输至数据处理装置;数据处理装置对故障录波信号进行分析处理后,获取故障分析信号并进行存储;根据客户端的请求,将故障分析信号发送至客户端。本申请实施例采用行波法进行故障定位,该方法定位准确性高,易于推广。而且对信号采用无线传输的方式,能够避免有线信号传输,有利于保持信号的精度和提供信号传输的效率。The application also provides a fault location method for distribution lines, including: judging whether a fault occurs in the distribution line according to the sudden change of current in the distribution line; obtaining the fault recording signal in the distribution line by the traveling wave method; The signal is transmitted to the data processing device through wireless transmission; the data processing device analyzes and processes the fault recording signal, obtains the fault analysis signal and stores it; and sends the fault analysis signal to the client according to the request of the client. The embodiment of the present application adopts the traveling wave method to locate the fault, which has high positioning accuracy and is easy to popularize. Moreover, the signal is transmitted wirelessly, which can avoid wired signal transmission, and is beneficial to maintain the accuracy of the signal and improve the efficiency of signal transmission.
应当理解的是,以上的一般描述和后文的细节描述仅是示例性和解释性的,并不能限制本申请。It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
附图说明Description of drawings
此处的附图被并入说明书中并构成本说明书的一部分,示出了符合本申请的实施例,并与说明书一起用于解释本申请的原理。The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description serve to explain the principles of the application.
为了更清楚地说明本申请实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,对于本领域普通技术人员而言,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, In other words, other drawings can also be obtained from these drawings without paying creative labor.
图1为本申请实施例提供的一种配电线路故障定位系统的结构示意图;FIG. 1 is a schematic structural diagram of a distribution line fault location system provided by an embodiment of the present application;
图2为本申请实施例提供的另一种配电线路故障定位系统的结构示意图;FIG. 2 is a schematic structural diagram of another distribution line fault location system provided by an embodiment of the present application;
图3为本申请实施例中高速数据处理元件的结构示意图;FIG. 3 is a schematic structural diagram of a high-speed data processing element in an embodiment of the present application;
图4为本申请实施例提供的一种配电线路故障定位方法的流程示意图。Fig. 4 is a schematic flowchart of a distribution line fault location method provided by an embodiment of the present application.
符号表示:1-穿心式行波传感器、2-无线传感器、3-启动元件、4-数据处理装置、41-高速数据处理元件、411-A/D转换器、412-FPGA逻辑电路控制单元、413-存储器、414-单片机、415-光耦隔离器、42-中央处理器、5-输出装置。Symbols indicate: 1-through-the-heart traveling wave sensor, 2-wireless sensor, 3-starting element, 4-data processing device, 41-high-speed data processing element, 411-A/D converter, 412-FPGA logic circuit control unit , 413-memory, 414-single-chip microcomputer, 415-optocoupler isolator, 42-central processing unit, 5-output device.
具体实施方式Detailed ways
为能清楚说明本方案的技术特点,下面通过具体实施方式,并结合其附图,对本申请进行详细阐述。下文的公开提供了许多不同的实施例或例子用来实现本申请的不同结构。为了简化本申请的公开,下文中对特定例子的部件和设置进行描述。此外,本申请可以在不同例子中重复参考数字和/或字母。这种重复是为了简化和清楚的目的,其本身不指示所讨论各种实施例和/或设置之间的关系。应当注意,在附图中所图示的部件不一定按比例绘制。本申请省略了对公知组件和处理技术及工艺的描述以避免不必要地限制本申请。In order to clearly illustrate the technical characteristics of the present solution, the present application will be described in detail below through specific implementation modes and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, components and arrangements of specific examples are described below. Furthermore, the application may repeat reference numbers and/or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and/or arrangements discussed. It should be noted that components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted herein to avoid unnecessarily limiting the application.
为了更好地理解本申请,下面结合附图来详细解释本申请的实施方式。In order to better understand the present application, the implementation manner of the present application will be explained in detail below in conjunction with the accompanying drawings.
实施例一Embodiment one
参见图1,图1是本申请实施例提供的一种配电线路故障定位系统的结构示意图。由图1可知,本申请实施例中的配电线路故障定位系统主要包括包括采集装置、启动元件3、数据处理装置4和输出装置5共四个部分,采集装置又包括穿心式行波传感器1和无线传感器2。其中,穿心式行波传感器1套接在配电线上,用于采集配电线上的信号,通常配电线上三相交流线,因此三相交流线的每一相上都套接有一个穿心式行波传感器,而无线传感器设置于采集装置的内部。Referring to FIG. 1 , FIG. 1 is a schematic structural diagram of a distribution line fault location system provided by an embodiment of the present application. It can be seen from Fig. 1 that the distribution line fault location system in the embodiment of the present application mainly includes four parts including the acquisition device, the starting element 3, the data processing device 4 and the output device 5, and the acquisition device also includes a through-hole traveling wave sensor 1 and wireless sensor 2. Among them, the core-through traveling wave sensor 1 is socketed on the distribution line to collect signals on the distribution line. Usually, there are three-phase AC lines on the distribution line, so each phase of the three-phase AC line is socketed There is a through-hole traveling wave sensor, and the wireless sensor is set inside the acquisition device.
穿心式行波传感器1与无线传感器2之间通过同轴电缆,采用同轴电缆能够使信号的强度和功率所受的损耗大大减小,从而提高采样信号的准确性。A coaxial cable is used between the through-core traveling wave sensor 1 and the wireless sensor 2, and the use of the coaxial cable can greatly reduce the signal strength and power loss, thereby improving the accuracy of the sampling signal.
无线传感器2采用GPRS信号进行传输,且本申请实施例中的无线传感器2支持MODBUS协议。无线传感器2支持MODBUS协议能够确保本申请实施例中的配电线路故障定位系统能够支持多种接口的设备,包括RS-232、RS-422、RS-485和以太网设备,从而有利于系统的推广使用。无线传感器2的设置能够避免有线传输中铺设线路的操作,使得系统结构更加简化,方便操作人员进行安装,而且通过将信号进行无线传输,能够减少外界因素对信号的干扰和衰减,有利于提高配电线路故障定位的准确性。The wireless sensor 2 uses GPRS signals for transmission, and the wireless sensor 2 in the embodiment of the present application supports the MODBUS protocol. The wireless sensor 2 supports the MODBUS protocol, which can ensure that the distribution line fault location system in the embodiment of the present application can support devices with multiple interfaces, including RS-232, RS-422, RS-485 and Ethernet devices, thereby facilitating system development. Promotional use. The setting of the wireless sensor 2 can avoid the operation of laying lines in the wired transmission, so that the system structure is more simplified, and it is convenient for the operator to install, and by wirelessly transmitting the signal, the interference and attenuation of the signal by external factors can be reduced, which is conducive to improving the configuration. The accuracy of fault location on electric lines.
继续参见图1,采集装置通过无线传感器2将信号分别传递至启动元件3和数据处理装置4,数据处理装置4对信号进行处理后传递给输出装置5,当信号经启动元件3判定为故障信号时,启动元件3将信号经数据处理装置4传递至输出装置5。启动元件3的设置,用于及时发现故障信息,当配电线路中没有故障时,启动元件不被触发,当配电线路中发生故障时启动元件被触发。启动元件的设置,使得操作人员可以及时发现故障信息,并通过输出装置对故障及时作出处理。启动元件可以采用软件的方式来实现。Continuing to refer to Fig. 1, the acquisition device transmits the signal to the starting element 3 and the data processing device 4 respectively through the wireless sensor 2, and the data processing device 4 processes the signal and transmits it to the output device 5. When the signal is judged as a fault signal by the starting element 3 , the activation element 3 transmits the signal to the output device 5 via the data processing device 4 . The setting of the starting element 3 is used to find fault information in time. When there is no fault in the power distribution line, the starting element is not triggered, and when a fault occurs in the power distribution line, the starting element is triggered. The setting of the starting element enables the operator to discover the fault information in time and deal with the fault in time through the output device. The activation element can be implemented in software.
本申请实施例中数据处理装置4用于对信号进行处理,当没有发生故障时,信号进行正常处理,当发生故障时,数据处理装置4根据启动元件的触发,进行故障定位处理。In the embodiment of the present application, the data processing device 4 is used to process the signal. When no fault occurs, the signal is processed normally. When a fault occurs, the data processing device 4 performs fault location processing according to the trigger of the activation element.
通过输出装置5对故障信息进行反馈,本申请实施例中输出装置为人机界面,包括显示器和操作键盘等。人机界面还可以用于客户端根据需求进行数据需求的输入。The fault information is fed back through the output device 5. In the embodiment of the present application, the output device is a man-machine interface, including a display and an operation keyboard. The man-machine interface can also be used by the client to input data requirements according to the requirements.
进一步地,本申请实施例中无线传感器2与同轴电缆之间还设置有电压抑制及分压器,其中,同轴电缆还与一避雷器连接。电压抑制与分压器的设置,既能够测量工频交流高压,又能够对过电压进行抑制,从而保护配电线路故障定位系统。避雷器的设置,也能够进一步起到保护配电线路故障定位系统的作用。另外,本申请实施例中,同轴电缆将避雷器与过电压抑制与分压器隔离开来,能够有效地减少雷电对过电压抑制与分压器的影响。Further, in the embodiment of the present application, a voltage suppressor and a voltage divider are also provided between the wireless sensor 2 and the coaxial cable, wherein the coaxial cable is also connected to a lightning arrester. The setting of voltage suppression and voltage divider can not only measure power frequency AC high voltage, but also suppress overvoltage, so as to protect the distribution line fault location system. The setting of the lightning arrester can also further protect the distribution line fault location system. In addition, in the embodiment of the present application, the coaxial cable isolates the lightning arrester from the overvoltage suppression and voltage divider, which can effectively reduce the impact of lightning on the overvoltage suppression and voltage divider.
实施例二Embodiment two
在图1所述实施例的基础上参见图2,图2为为本申请实施例提供的另一种配电线路故障定位系统的结构示意图。由图2可知,本实施例的配电线路故障定位系统中,数据处理装置4由高速数据处理元件41和中央处理器42组成。具体地,采集装置通过无线传感器2将信号分别传递至启动元件3和高速数据处理元件4,高速数据处理单元41对数据进行初步处理后发送至中央处理器42,中央处理器42与输出装置5连接,无线传感器2还通过启动元件3与中央处理器42连接。Referring to FIG. 2 on the basis of the embodiment described in FIG. 1 , FIG. 2 is a schematic structural diagram of another distribution line fault location system provided for an embodiment of the present application. As can be seen from FIG. 2 , in the distribution line fault location system of this embodiment, the data processing device 4 is composed of a high-speed data processing element 41 and a central processing unit 42 . Specifically, the acquisition device transmits signals to the starting element 3 and the high-speed data processing element 4 respectively through the wireless sensor 2, and the high-speed data processing unit 41 sends the data to the central processing unit 42 after preliminary processing, and the central processing unit 42 communicates with the output device 5 The wireless sensor 2 is also connected with the central processing unit 42 through the activation element 3 .
本实施例中数据处理装置4由高速数据处理元件41和中央处理器42组成,高速数据处理元件首先对采集装置通过无线传感器2传递来的信号进行初步处理,将处理后的数据再发送至中央处理器42,由中央处理器对数据进行进一步分析判断,从而对穿心式行波传感器2采集到的数据进行全面分析以更加精确地对故障进行定位。中央处理器2与输出装置5连接,能够将故障分析信息传递至客户端。本实施例中无线传感器2通过启动元件3与中央处理器42连接,能够及时获取配电线路故障信息,并对故障信息进行处理。In this embodiment, the data processing device 4 is composed of a high-speed data processing element 41 and a central processing unit 42. The high-speed data processing element first performs preliminary processing on the signal transmitted by the acquisition device through the wireless sensor 2, and then sends the processed data to the central processing unit. Processor 42, the central processing unit further analyzes and judges the data, so as to comprehensively analyze the data collected by the through-hole traveling wave sensor 2 to more accurately locate the fault. The central processing unit 2 is connected with the output device 5, and can transmit the fault analysis information to the client. In this embodiment, the wireless sensor 2 is connected to the central processing unit 42 through the activation element 3, so as to obtain the fault information of the power distribution line in time and process the fault information.
高速数据处理元件41的具体结构可以参见图3,由图3可知,本申请实施例中高速数据处理元件41主要包括:A/D转换器411、FPGA逻辑电路控制单元412、存储器413、单片机414以及光耦隔离器415五个部分。其中,A/D转换器411用于对信号进行A/D转换并将A/D转换后的信号传递至存储器413和单片机414,存储器用于413对A/D转换后的信号进行存储并与FPGA逻辑电路控制单元413进行交互,单片机414用于对A/D转换后的信号进行初步处理并与FPGA逻辑电路控制单元412进行交互,FPGA逻辑电路控制单元412将信号反馈至A/D转换器411,单片机414还通过光耦隔离器415与中央处理器42连接。The specific structure of high-speed data processing element 41 can refer to Fig. 3, as can be seen from Fig. 3, high-speed data processing element 41 mainly comprises in the embodiment of the present application: A/D converter 411, FPGA logic circuit control unit 412, memory 413, single-chip microcomputer 414 And optocoupler isolator 415 five parts. Wherein, the A/D converter 411 is used for performing A/D conversion on the signal and transferring the signal after the A/D conversion to the memory 413 and the single-chip microcomputer 414, and the memory is used for 413 to store the signal after the A/D conversion and communicate with The FPGA logic circuit control unit 413 interacts, and the single-chip microcomputer 414 is used to perform preliminary processing on the signal after the A/D conversion and interacts with the FPGA logic circuit control unit 412, and the FPGA logic circuit control unit 412 feeds back the signal to the A/D converter 411 , the single-chip microcomputer 414 is also connected to the central processing unit 42 through an optocoupler isolator 415 .
本实施例中A/D转换器可以采用120HZ A/D转换器,将穿心式行波传感器所采集的信号转换为包含地址的数字信号形式。FPGA逻辑电路控制单元412的设置,能够将存储器所存储的信息以及单片机对A/D转换后的信号进行处理后的信息反馈至A/D转换器。In this embodiment, the A/D converter may use a 120HZ A/D converter to convert the signal collected by the through-type traveling wave sensor into a digital signal form including an address. The configuration of the FPGA logic circuit control unit 412 can feed back the information stored in the memory and the information processed by the single chip microcomputer to the A/D converted signal to the A/D converter.
本实施例中通过光耦隔离器415将高速数据处理元件41与中央处理器42连接起来,由于光耦隔离器具有良好的电绝缘能力和抗干扰能力,因此能够有效提高信噪比,从而提高配电线路故障定位的准确性。In this embodiment, the high-speed data processing element 41 is connected with the central processing unit 42 through the optocoupler isolator 415. Since the optocoupler isolator has good electrical insulation capability and anti-interference ability, it can effectively improve the signal-to-noise ratio, thereby improving The accuracy of distribution line fault location.
继续参见图2,本申请实施例中中央处理器可以采用DSP系统的TMS320C5545芯片。进一步地,本实施例中中央处理器42还与一大容量存储器连接。这种结构设计,能够使中央处理器42处理后的数据得到有效存储,而且便于操作者长期收集配电线路故障。Continuing to refer to FIG. 2 , in the embodiment of the present application, the central processor may adopt the TMS320C5545 chip of the DSP system. Further, in this embodiment, the central processing unit 42 is also connected to a large-capacity memory. This structural design enables the data processed by the central processing unit 42 to be effectively stored, and is convenient for the operator to collect distribution line faults for a long time.
该实施例未详细描述的部分可参照图1所示的实施例一,两者之间可以互相参照,在此不再详细阐述。For parts not described in detail in this embodiment, reference may be made to Embodiment 1 shown in FIG. 1 , and the two may refer to each other, and will not be described in detail here.
参见图4,图4为本申请实施例提供的一种配电线路故障定位方法的流程示意图。由图4可知,本申请实施例中配电线路故障定位方法,主要包括如下步骤:Referring to FIG. 4 , FIG. 4 is a schematic flowchart of a distribution line fault location method provided by an embodiment of the present application. As can be seen from FIG. 4, the distribution line fault location method in the embodiment of the present application mainly includes the following steps:
S1:根据配电线路中电流突变情况判断配电线路是否发生故障。S1: According to the sudden change of current in the distribution line, it is judged whether there is a fault in the distribution line.
可以通过一启动元件判定配电线路中是否发生故障,通常当配电线路中发生故障时,电流会发生突变。电流正常的情况下,启动元件不被触发,当电路发生异常或故障时启动元件被触发。A starting element can be used to determine whether there is a fault in the distribution line. Usually, when a fault occurs in the distribution line, the current will change abruptly. When the current is normal, the starting element is not triggered, and when the circuit is abnormal or faulty, the starting element is triggered.
S2:当配电线路发生故障时,通过行波法获取配电线路中的故障录波信号。S2: When the distribution line fails, the fault recording signal in the distribution line is obtained by the traveling wave method.
当配电线路中发生故障时,采用行波法获取配电线路中的故障录波信号,可以采用一行波传感器,例如穿心式行波传感器采集配电线路中的故障录波信号。本实施例中的行波法为现有技术中已有的行波测距法。When a fault occurs in the distribution line, the traveling wave method is used to obtain the fault recording signal in the distribution line, and a line wave sensor, such as a through-hole traveling wave sensor, can be used to collect the fault recording signal in the distribution line. The traveling wave method in this embodiment is the existing traveling wave ranging method in the prior art.
获取到故障录波信号后,进入步骤S3:将故障录波信号通过无线传输的方式传输至数据处理装置。After the fault recording signal is obtained, go to step S3: transmit the fault recording signal to the data processing device through wireless transmission.
获取到故障录波信号后,将故障录波信号传输至数据处理装置,以便于后续对故障录波信号进行处理分析,从而确定故障位置。本实施例中采用无线传输的方式,能够有效避免故障录波信号传输过程中产生的信号干扰现象,有利于提高故障定位精度。After the fault recording signal is obtained, the fault recording signal is transmitted to the data processing device, so as to facilitate subsequent processing and analysis of the fault recording signal, so as to determine the fault location. In this embodiment, the wireless transmission method is adopted, which can effectively avoid signal interference generated during the transmission of the fault recording signal, and is beneficial to improve the accuracy of fault location.
本实施例中数据处理装置可以采用高速数据处理元件和中央处理器。The data processing device in this embodiment may use high-speed data processing elements and a central processing unit.
S4:数据处理装置对故障录波信号进行分析处理,获取故障分析信号并对故障分析信号进行存储。S4: The data processing device analyzes and processes the fault recording signal, acquires the fault analysis signal and stores the fault analysis signal.
具体地,步骤S4包括如下过程:Specifically, step S4 includes the following processes:
高速数据处理元件对故障录波信号进行初步处理和存储,并将处理后的数据发送至中央处理器;The high-speed data processing element preliminarily processes and stores the fault recording signal, and sends the processed data to the central processing unit;
中央处理器对高速数据处理单元初步处理后的数据进行分析,获取故障分析信号并对故障分析信号进行存储。The central processing unit analyzes the data preliminarily processed by the high-speed data processing unit, acquires the fault analysis signal and stores the fault analysis signal.
S5:根据客户端的请求,将故障分析信号发送至客户端。S5: Send the fault analysis signal to the client according to the request of the client.
本申请实施例中配电线路故障定位方法及原理,在图1-图3所示的实施例中已经详细介绍,在此不再赘述。The distribution line fault location method and principle in the embodiment of the present application have been introduced in detail in the embodiments shown in FIGS. 1-3 , and will not be repeated here.
以上所述只是本申请的可选实施方式,对于本技术领域的普通技术人员来说,在不脱离本申请原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也被视为本申请的保护范围。The above are only optional implementations of the present application. For those of ordinary skill in the art, without departing from the principle of the present application, some improvements and modifications can also be made, and these improvements and modifications are also considered as protection scope of this application.
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